Tyler Oakley

YouTube Personality & New York Times Bestselling Author; LGBTQ+ Youth Advocate

Grace Helbig

Comedian, YouTube Personality, Actress & Author

Nash Grier

Social Media Guru, Digital Influencer & Environmental Activist

GloZell

YouTube Entrepreneur

Daniel Pauly

Daniel Pauly is the principal investigator at the Sea Around Us Project, which studies the impact of the world's fisheries on marine ecosystems. The software he's helped develop is used around the world to model and track the ocean.

Edward Norton

Award Winning Actor & Filmmaker

Bill Nussey

Founder of the Freeing Energy Project; Partner at Tech Square Ventures & Engage

Ramez Naam

Computer Scientist, Science Fiction Author & Co-Chair of Energy & Environment at Singularity University

Ramez Naam - Exponential Innovation | SingularityU Thailand Summit

Tristram Stuart

Environmental Campaigner, Author & Businessman

Sophia Bush

Actress, Humanitarian & Author

Olivia Munn

Television & Film Actress; Known for "Newsroom" & "X-Men: Apocalypse"

Olivia Munn on Jon Stewart | 2022 Mark Twain Prize

Harvey Wasserman

Journalist, Author, Democracy Activist & Advocate for Renewable Energy

Alexandra Cousteau

Environmental Activist, Storyteller & Ocean Advocate

Louie Schwartzberg

Award-Winning Cinematographer, Director, Photographer and Filmmaker

William McDonough

Renowned Architectural Designer, Advisor & Co-Author of "Cradle to Cradle + The Upcycle"

Dylan Ratigan

New York Times Best-Selling Author, Sustainability Entrepreneur & the Former Host of MSNBC’s "The Dylan Ratigan Show"

Sebastian Copeland

Adventurer, Environmental Activist, Award-Winning Photographer, Author, Lecturer & Founder of the Sedna Foundation

Doc Hendley

Global Humanitarian, Clean Water Crusader, Top 10 CNN Hero, Sustainability Advocate

Robert Ballard

Renowned Ocean Explorer & Scientist

Alice Waters

Executive Chef, Founder & Owner of Chez Panisse; Sustainable Agriculture Advocate

Hayden Panettiere

Actress Known for "Nashville" & "Heroes" & Animal Rights Activist

Bill Nye

"The Science Guy"; Science Communicator, TV Presenter & Mechanical Engineer; Climate Change Activist

Dr. Michio Kaku

World-Renowned Futurist & Theoretical Physicist

Ashley Judd

Actress, Activist & Humanitarian

Van Jones

CEO of REFORM Alliance, CNN host, Emmy Award-winning Producer & NY Times Best-Selling Author

Adrian Grenier

Actor Known for HBO's "Entourage"; Environmental Activist; UN Ambassador

Al Gore

45th Vice President of the United States, Nobel Peace Laureate & Bestselling Author

Doug Fine

Globe-Trotting Journalist, Award-Winning Climate Correspondent, Goat-Herder & Author

Daniel Esty

Hillhouse Professor of Environmental Law and Policy at Yale Law School, Corporate Environmental Strategy Expert & Co-Author of "Green to Gold"

Sylvia Earle

Explorer-in-Residence at National Geographic & Oceanographer; Former Chief Scientist of the NOAA